ctl_frontend_cam_sim.c revision 275878
138816Sdfr/*- 248205Sjdp * Copyright (c) 2009 Silicon Graphics International Corp. 338816Sdfr * All rights reserved. 438816Sdfr * 538816Sdfr * Redistribution and use in source and binary forms, with or without 638816Sdfr * modification, are permitted provided that the following conditions 738816Sdfr * are met: 838816Sdfr * 1. Redistributions of source code must retain the above copyright 938816Sdfr * notice, this list of conditions, and the following disclaimer, 1038816Sdfr * without modification. 1138816Sdfr * 2. Redistributions in binary form must reproduce at minimum a disclaimer 1238816Sdfr * substantially similar to the "NO WARRANTY" disclaimer below 1338816Sdfr * ("Disclaimer") and any redistribution must be conditioned upon 1438816Sdfr * including a substantially similar Disclaimer requirement for further 1538816Sdfr * binary redistribution. 1638816Sdfr * 1738816Sdfr * NO WARRANTY 1838816Sdfr * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1938816Sdfr * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 2038816Sdfr * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 2138816Sdfr * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2238816Sdfr * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2338816Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2438816Sdfr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2550476Speter * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 2638816Sdfr * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 2738816Sdfr * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 2838816Sdfr * POSSIBILITY OF SUCH DAMAGES. 2938816Sdfr * 3038816Sdfr * $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl_frontend_cam_sim.c#4 $ 3138816Sdfr */ 3238816Sdfr/* 3338816Sdfr * CTL frontend to CAM SIM interface. This allows access to CTL LUNs via 3438816Sdfr * the da(4) and pass(4) drivers from inside the system. 3538816Sdfr * 36133063Sdfr * Author: Ken Merry <ken@FreeBSD.org> 37133063Sdfr */ 3838816Sdfr 3938816Sdfr#include <sys/cdefs.h> 4038816Sdfr__FBSDID("$FreeBSD: stable/10/sys/cam/ctl/ctl_frontend_cam_sim.c 275878 2014-12-18 08:22:16Z mav $"); 4138816Sdfr 4238816Sdfr#include <sys/param.h> 4338816Sdfr#include <sys/systm.h> 4438816Sdfr#include <sys/kernel.h> 4538816Sdfr#include <sys/types.h> 4638816Sdfr#include <sys/malloc.h> 4738816Sdfr#include <sys/lock.h> 4838816Sdfr#include <sys/mutex.h> 4938816Sdfr#include <sys/condvar.h> 5038816Sdfr#include <sys/queue.h> 51281453Skib#include <sys/bus.h> 5238816Sdfr#include <sys/sysctl.h> 5338816Sdfr#include <machine/bus.h> 5438816Sdfr#include <sys/sbuf.h> 5538816Sdfr 5638816Sdfr#include <cam/cam.h> 5738816Sdfr#include <cam/cam_ccb.h> 5838816Sdfr#include <cam/cam_sim.h> 5938816Sdfr#include <cam/cam_xpt_sim.h> 6038816Sdfr#include <cam/cam_xpt.h> 6138816Sdfr#include <cam/cam_periph.h> 6238816Sdfr#include <cam/scsi/scsi_all.h> 6338816Sdfr#include <cam/scsi/scsi_message.h> 6438816Sdfr#include <cam/ctl/ctl_io.h> 6538816Sdfr#include <cam/ctl/ctl.h> 6638816Sdfr#include <cam/ctl/ctl_frontend.h> 6738816Sdfr#include <cam/ctl/ctl_frontend_internal.h> 6838816Sdfr#include <cam/ctl/ctl_debug.h> 6938816Sdfr 7038816Sdfr#define io_ptr spriv_ptr1 7138816Sdfr 7238816Sdfrstruct cfcs_io { 7338816Sdfr union ccb *ccb; 7438816Sdfr}; 7538816Sdfr 7638816Sdfrstruct cfcs_softc { 77216695Skib struct ctl_port port; 78216695Skib char port_name[32]; 79216695Skib struct cam_sim *sim; 8038816Sdfr struct cam_devq *devq; 8138816Sdfr struct cam_path *path; 8238816Sdfr struct mtx lock; 8338816Sdfr uint64_t wwnn; 8438816Sdfr uint64_t wwpn; 85216695Skib uint32_t cur_tag_num; 86216695Skib int online; 87233231Skib}; 8838816Sdfr 89216695Skib/* 90216695Skib * We can't handle CCBs with these flags. For the most part, we just don't 91216695Skib * handle physical addresses yet. That would require mapping things in 92216695Skib * order to do the copy. 93216695Skib */ 9438816Sdfr#define CFCS_BAD_CCB_FLAGS (CAM_DATA_ISPHYS | CAM_MSG_BUF_PHYS | \ 95216695Skib CAM_SNS_BUF_PHYS | CAM_CDB_PHYS | CAM_SENSE_PTR | \ 96216695Skib CAM_SENSE_PHYS) 9738816Sdfr 9838816Sdfrint cfcs_init(void); 9938816Sdfrstatic void cfcs_poll(struct cam_sim *sim); 10038816Sdfrstatic void cfcs_online(void *arg); 10138816Sdfrstatic void cfcs_offline(void *arg); 10238816Sdfrstatic int cfcs_lun_enable(void *arg, struct ctl_id target_id, int lun_id); 10338816Sdfrstatic int cfcs_lun_disable(void *arg, struct ctl_id target_id, int lun_id); 104216695Skibstatic void cfcs_datamove(union ctl_io *io); 10538816Sdfrstatic void cfcs_done(union ctl_io *io); 10638816Sdfrvoid cfcs_action(struct cam_sim *sim, union ccb *ccb); 10738816Sdfrstatic void cfcs_async(void *callback_arg, uint32_t code, 10838816Sdfr struct cam_path *path, void *arg); 10938816Sdfr 11038816Sdfrstruct cfcs_softc cfcs_softc; 11138816Sdfr/* 11245501Sjdp * This is primarly intended to allow for error injection to test the CAM 11345501Sjdp * sense data and sense residual handling code. This sets the maximum 11445501Sjdp * amount of SCSI sense data that we will report to CAM. 11545501Sjdp */ 11645501Sjdpstatic int cfcs_max_sense = sizeof(struct scsi_sense_data); 11745501Sjdp 11845501SjdpSYSCTL_NODE(_kern_cam, OID_AUTO, ctl2cam, CTLFLAG_RD, 0, 11945501Sjdp "CAM Target Layer SIM frontend"); 12045501SjdpSYSCTL_INT(_kern_cam_ctl2cam, OID_AUTO, max_sense, CTLFLAG_RW, 12145501Sjdp &cfcs_max_sense, 0, "Maximum sense data size"); 12238816Sdfr 12338816Sdfrstatic struct ctl_frontend cfcs_frontend = 124233231Skib{ 125233231Skib .name = "camsim", 12638816Sdfr .init = cfcs_init, 12738816Sdfr}; 12838816SdfrCTL_FRONTEND_DECLARE(ctlcfcs, cfcs_frontend); 12976296Sjdp 130271469Skibint 131271469Skibcfcs_init(void) 132271469Skib{ 133271469Skib struct cfcs_softc *softc; 13438816Sdfr struct ccb_setasync csa; 135271469Skib struct ctl_port *port; 13698100Sdillon#ifdef NEEDTOPORT 13798100Sdillon char wwnn[8]; 13898100Sdillon#endif 13998100Sdillon int retval; 140208256Srdivacky 141271469Skib softc = &cfcs_softc; 142271469Skib retval = 0; 143208256Srdivacky bzero(softc, sizeof(*softc)); 144271469Skib mtx_init(&softc->lock, "ctl2cam", NULL, MTX_DEF); 14576296Sjdp port = &softc->port; 146271469Skib 14738816Sdfr port->frontend = &cfcs_frontend; 148271469Skib port->port_type = CTL_PORT_INTERNAL; 149271469Skib /* XXX KDM what should the real number be here? */ 150271469Skib port->num_requested_ctl_io = 4096; 151271469Skib snprintf(softc->port_name, sizeof(softc->port_name), "camsim"); 152271469Skib port->port_name = softc->port_name; 153271469Skib port->port_online = cfcs_online; 154271469Skib port->port_offline = cfcs_offline; 155271469Skib port->onoff_arg = softc; 156271469Skib port->lun_enable = cfcs_lun_enable; 157271469Skib port->lun_disable = cfcs_lun_disable; 158271469Skib port->targ_lun_arg = softc; 159271469Skib port->fe_datamove = cfcs_datamove; 160271469Skib port->fe_done = cfcs_done; 161271469Skib 162271469Skib /* XXX KDM what should we report here? */ 163271469Skib /* XXX These should probably be fetched from CTL. */ 164271469Skib port->max_targets = 1; 165271469Skib port->max_target_id = 15; 166271469Skib 167271469Skib retval = ctl_port_register(port); 168271469Skib if (retval != 0) { 169271469Skib printf("%s: ctl_port_register() failed with error %d!\n", 170271469Skib __func__, retval); 171271469Skib mtx_destroy(&softc->lock); 172271469Skib return (retval); 173271469Skib } 174271469Skib 175271469Skib /* 176271469Skib * Get the WWNN out of the database, and create a WWPN as well. 177271469Skib */ 178271469Skib#ifdef NEEDTOPORT 179271469Skib ddb_GetWWNN((char *)wwnn); 180271469Skib softc->wwnn = be64dec(wwnn); 181271469Skib softc->wwpn = softc->wwnn + (softc->port.targ_port & 0xff); 182271469Skib#endif 183271469Skib 184271469Skib /* 185271469Skib * If the CTL frontend didn't tell us what our WWNN/WWPN is, go 186271469Skib * ahead and set something random. 187271469Skib */ 188271469Skib if (port->wwnn == 0) { 189271469Skib uint64_t random_bits; 190271469Skib 19138816Sdfr arc4rand(&random_bits, sizeof(random_bits), 0); 192271469Skib softc->wwnn = (random_bits & 0x0000000fffffff00ULL) | 19338816Sdfr /* Company ID */ 0x5000000000000000ULL | 194271469Skib /* NL-Port */ 0x0300; 195271469Skib softc->wwpn = softc->wwnn + port->targ_port + 1; 196271469Skib ctl_port_set_wwns(port, true, softc->wwnn, true, softc->wwpn); 197271469Skib } else { 198271469Skib softc->wwnn = port->wwnn; 199271469Skib softc->wwpn = port->wwpn; 200271469Skib } 201133063Sdfr 202271469Skib mtx_lock(&softc->lock); 203271469Skib softc->devq = cam_simq_alloc(port->num_requested_ctl_io); 204271469Skib if (softc->devq == NULL) { 205133063Sdfr printf("%s: error allocating devq\n", __func__); 206271469Skib retval = ENOMEM; 207271469Skib goto bailout; 208271469Skib } 209271469Skib 210271469Skib softc->sim = cam_sim_alloc(cfcs_action, cfcs_poll, softc->port_name, 211271469Skib softc, /*unit*/ 0, &softc->lock, 1, 212271469Skib port->num_requested_ctl_io, softc->devq); 213271469Skib if (softc->sim == NULL) { 214271469Skib printf("%s: error allocating SIM\n", __func__); 215271469Skib retval = ENOMEM; 216271469Skib goto bailout; 217271469Skib } 218271469Skib 219271469Skib if (xpt_bus_register(softc->sim, NULL, 0) != CAM_SUCCESS) { 220133063Sdfr printf("%s: error registering SIM\n", __func__); 221271469Skib retval = ENOMEM; 222271469Skib goto bailout; 223271469Skib } 224271469Skib 225271469Skib if (xpt_create_path(&softc->path, /*periph*/NULL, 226271469Skib cam_sim_path(softc->sim), 227271469Skib CAM_TARGET_WILDCARD, 228271469Skib CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 229271469Skib printf("%s: error creating path\n", __func__); 230271469Skib xpt_bus_deregister(cam_sim_path(softc->sim)); 231271469Skib retval = EINVAL; 232271469Skib goto bailout; 233271469Skib } 234271469Skib 235271469Skib xpt_setup_ccb(&csa.ccb_h, softc->path, CAM_PRIORITY_NONE); 236271469Skib csa.ccb_h.func_code = XPT_SASYNC_CB; 237271469Skib csa.event_enable = AC_LOST_DEVICE; 238271469Skib csa.callback = cfcs_async; 239271469Skib csa.callback_arg = softc->sim; 240271469Skib xpt_action((union ccb *)&csa); 241271469Skib 242271469Skib mtx_unlock(&softc->lock); 243271469Skib 244271469Skib return (retval); 245271469Skib 246271469Skibbailout: 247271469Skib if (softc->sim) 248271469Skib cam_sim_free(softc->sim, /*free_devq*/ TRUE); 249271469Skib else if (softc->devq) 250271469Skib cam_simq_free(softc->devq); 251271469Skib mtx_unlock(&softc->lock); 252271469Skib mtx_destroy(&softc->lock); 253271469Skib 254271469Skib return (retval); 255271469Skib} 256271469Skib 257271469Skibstatic void 258271469Skibcfcs_poll(struct cam_sim *sim) 259271469Skib{ 260271469Skib 261271469Skib} 262133063Sdfr 263133063Sdfrstatic void 26438816Sdfrcfcs_onoffline(void *arg, int online) 26598103Sdillon{ 26698103Sdillon struct cfcs_softc *softc; 267271469Skib union ccb *ccb; 268233231Skib 26938816Sdfr softc = (struct cfcs_softc *)arg; 27038816Sdfr 27138816Sdfr mtx_lock(&softc->lock); 27238816Sdfr softc->online = online; 27356780Sjdp 27438816Sdfr ccb = xpt_alloc_ccb_nowait(); 27548205Sjdp if (ccb == NULL) { 27648205Sjdp printf("%s: unable to allocate CCB for rescan\n", __func__); 27738816Sdfr goto bailout; 27848205Sjdp } 27948205Sjdp 280228435Skib if (xpt_create_path(&ccb->ccb_h.path, NULL, 28138816Sdfr cam_sim_path(softc->sim), CAM_TARGET_WILDCARD, 282228435Skib CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 283228435Skib printf("%s: can't allocate path for rescan\n", __func__); 284228435Skib xpt_free_ccb(ccb); 285228435Skib goto bailout; 286228435Skib } 287228435Skib xpt_rescan(ccb); 28838816Sdfr 289228435Skibbailout: 290228435Skib mtx_unlock(&softc->lock); 291228435Skib} 292228435Skib 293228435Skibstatic void 294228435Skibcfcs_online(void *arg) 295228435Skib{ 296228435Skib cfcs_onoffline(arg, /*online*/ 1); 297228435Skib} 29856780Sjdp 29956780Sjdpstatic void 30056780Sjdpcfcs_offline(void *arg) 30138816Sdfr{ 30256780Sjdp cfcs_onoffline(arg, /*online*/ 0); 30356780Sjdp} 304233231Skib 30556780Sjdpstatic int 30656780Sjdpcfcs_lun_enable(void *arg, struct ctl_id target_id, int lun_id) 30756780Sjdp{ 30848205Sjdp return (0); 30956780Sjdp} 31056780Sjdpstatic int 31156780Sjdpcfcs_lun_disable(void *arg, struct ctl_id target_id, int lun_id) 31256780Sjdp{ 31385004Sdfr return (0); 31456780Sjdp} 31556780Sjdp 31656780Sjdp/* 317228435Skib * This function is very similar to ctl_ioctl_do_datamove(). Is there a 318228435Skib * way to combine the functionality? 319228435Skib * 320233231Skib * XXX KDM may need to move this into a thread. We're doing a bcopy in the 321233231Skib * caller's context, which will usually be the backend. That may not be a 322228435Skib * good thing. 323228435Skib */ 324228435Skibstatic void 325228435Skibcfcs_datamove(union ctl_io *io) 326228435Skib{ 327228435Skib union ccb *ccb; 328228435Skib bus_dma_segment_t cam_sg_entry, *cam_sglist; 329228435Skib struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 330228435Skib int cam_sg_count, ctl_sg_count, cam_sg_start; 331228435Skib int cam_sg_offset; 332228435Skib int len_to_copy, len_copied; 333228435Skib int ctl_watermark, cam_watermark; 334228435Skib int i, j; 335228435Skib 336228435Skib 337228435Skib cam_sg_offset = 0; 338228435Skib cam_sg_start = 0; 339228435Skib 34048205Sjdp ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 341228435Skib 34256780Sjdp /* 34338816Sdfr * Note that we have a check in cfcs_action() to make sure that any 34438816Sdfr * CCBs with "bad" flags are returned with CAM_REQ_INVALID. This 345133063Sdfr * is just to make sure no one removes that check without updating 346228435Skib * this code to provide the additional functionality necessary to 347228435Skib * support those modes of operation. 348228435Skib */ 349228435Skib KASSERT(((ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) == 0), ("invalid " 350228435Skib "CAM flags %#x", (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS))); 351228435Skib 352228435Skib /* 353228503Skib * Simplify things on both sides by putting single buffers into a 354228503Skib * single entry S/G list. 355228435Skib */ 356228435Skib switch ((ccb->ccb_h.flags & CAM_DATA_MASK)) { 357228435Skib case CAM_DATA_SG: { 358228435Skib int len_seen; 359228435Skib 360228503Skib cam_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr; 361228503Skib cam_sg_count = ccb->csio.sglist_cnt; 362228503Skib 363228435Skib for (i = 0, len_seen = 0; i < cam_sg_count; i++) { 364228435Skib if ((len_seen + cam_sglist[i].ds_len) >= 365228435Skib io->scsiio.kern_rel_offset) { 366228435Skib cam_sg_start = i; 367228503Skib cam_sg_offset = io->scsiio.kern_rel_offset - 368228435Skib len_seen; 369228435Skib break; 370228435Skib } 371228435Skib len_seen += cam_sglist[i].ds_len; 372233231Skib } 373228435Skib break; 374228435Skib } 375228435Skib case CAM_DATA_VADDR: 376228435Skib cam_sglist = &cam_sg_entry; 377228435Skib cam_sglist[0].ds_len = ccb->csio.dxfer_len; 378228435Skib cam_sglist[0].ds_addr = (bus_addr_t)ccb->csio.data_ptr; 379228435Skib cam_sg_count = 1; 380228435Skib cam_sg_start = 0; 381228435Skib cam_sg_offset = io->scsiio.kern_rel_offset; 382228435Skib break; 383228435Skib default: 384228435Skib panic("Invalid CAM flags %#x", ccb->ccb_h.flags); 385228435Skib } 386228435Skib 387228435Skib if (io->scsiio.kern_sg_entries > 0) { 388233231Skib ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 389233231Skib ctl_sg_count = io->scsiio.kern_sg_entries; 390228435Skib } else { 391228435Skib ctl_sglist = &ctl_sg_entry; 392228435Skib ctl_sglist->addr = io->scsiio.kern_data_ptr; 393228435Skib ctl_sglist->len = io->scsiio.kern_data_len; 394228503Skib ctl_sg_count = 1; 395228435Skib } 396228503Skib 397228435Skib ctl_watermark = 0; 398228435Skib cam_watermark = cam_sg_offset; 399228435Skib len_copied = 0; 400228435Skib for (i = cam_sg_start, j = 0; 401228435Skib i < cam_sg_count && j < ctl_sg_count;) { 402228435Skib uint8_t *cam_ptr, *ctl_ptr; 403228435Skib 404228435Skib len_to_copy = ctl_min(cam_sglist[i].ds_len - cam_watermark, 405228435Skib ctl_sglist[j].len - ctl_watermark); 406133063Sdfr 407133063Sdfr cam_ptr = (uint8_t *)cam_sglist[i].ds_addr; 408133063Sdfr cam_ptr = cam_ptr + cam_watermark; 409133063Sdfr if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 410133063Sdfr /* 411133063Sdfr * XXX KDM fix this! 412133063Sdfr */ 413133063Sdfr panic("need to implement bus address support"); 414133063Sdfr#if 0 415133063Sdfr kern_ptr = bus_to_virt(kern_sglist[j].addr); 416133063Sdfr#endif 417157198Sdavidxu } else 418147673Speter ctl_ptr = (uint8_t *)ctl_sglist[j].addr; 419133063Sdfr ctl_ptr = ctl_ptr + ctl_watermark; 420133063Sdfr 421133063Sdfr ctl_watermark += len_to_copy; 422133063Sdfr cam_watermark += len_to_copy; 423133063Sdfr 424133063Sdfr if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 425133063Sdfr CTL_FLAG_DATA_IN) { 426133063Sdfr CTL_DEBUG_PRINT(("%s: copying %d bytes to CAM\n", 427133063Sdfr __func__, len_to_copy)); 428133063Sdfr CTL_DEBUG_PRINT(("%s: from %p to %p\n", ctl_ptr, 429133063Sdfr __func__, cam_ptr)); 430133063Sdfr bcopy(ctl_ptr, cam_ptr, len_to_copy); 431133063Sdfr } else { 432133063Sdfr CTL_DEBUG_PRINT(("%s: copying %d bytes from CAM\n", 433133063Sdfr __func__, len_to_copy)); 434133063Sdfr CTL_DEBUG_PRINT(("%s: from %p to %p\n", cam_ptr, 435133063Sdfr __func__, ctl_ptr)); 436133063Sdfr bcopy(cam_ptr, ctl_ptr, len_to_copy); 437133063Sdfr } 438133063Sdfr 439133063Sdfr len_copied += len_to_copy; 440133063Sdfr 441 if (cam_sglist[i].ds_len == cam_watermark) { 442 i++; 443 cam_watermark = 0; 444 } 445 446 if (ctl_sglist[j].len == ctl_watermark) { 447 j++; 448 ctl_watermark = 0; 449 } 450 } 451 452 io->scsiio.ext_data_filled += len_copied; 453 454 io->scsiio.be_move_done(io); 455} 456 457static void 458cfcs_done(union ctl_io *io) 459{ 460 union ccb *ccb; 461 462 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 463 if (ccb == NULL) { 464 ctl_free_io(io); 465 return; 466 } 467 468 /* 469 * At this point we should have status. If we don't, that's a bug. 470 */ 471 KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 472 ("invalid CTL status %#x", io->io_hdr.status)); 473 474 /* 475 * Translate CTL status to CAM status. 476 */ 477 switch (io->io_hdr.status & CTL_STATUS_MASK) { 478 case CTL_SUCCESS: 479 ccb->ccb_h.status = CAM_REQ_CMP; 480 break; 481 case CTL_SCSI_ERROR: 482 ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 483 ccb->csio.scsi_status = io->scsiio.scsi_status; 484 bcopy(&io->scsiio.sense_data, &ccb->csio.sense_data, 485 min(io->scsiio.sense_len, ccb->csio.sense_len)); 486 if (ccb->csio.sense_len > io->scsiio.sense_len) 487 ccb->csio.sense_resid = ccb->csio.sense_len - 488 io->scsiio.sense_len; 489 else 490 ccb->csio.sense_resid = 0; 491 if ((ccb->csio.sense_len - ccb->csio.sense_resid) > 492 cfcs_max_sense) { 493 ccb->csio.sense_resid = ccb->csio.sense_len - 494 cfcs_max_sense; 495 } 496 break; 497 case CTL_CMD_ABORTED: 498 ccb->ccb_h.status = CAM_REQ_ABORTED; 499 break; 500 case CTL_ERROR: 501 default: 502 ccb->ccb_h.status = CAM_REQ_CMP_ERR; 503 break; 504 } 505 506 xpt_done(ccb); 507 ctl_free_io(io); 508} 509 510void 511cfcs_action(struct cam_sim *sim, union ccb *ccb) 512{ 513 struct cfcs_softc *softc; 514 int err; 515 516 softc = (struct cfcs_softc *)cam_sim_softc(sim); 517 mtx_assert(&softc->lock, MA_OWNED); 518 519 switch (ccb->ccb_h.func_code) { 520 case XPT_SCSI_IO: { 521 union ctl_io *io; 522 struct ccb_scsiio *csio; 523 524 csio = &ccb->csio; 525 526 /* 527 * Catch CCB flags, like physical address flags, that 528 * indicate situations we currently can't handle. 529 */ 530 if (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) { 531 ccb->ccb_h.status = CAM_REQ_INVALID; 532 printf("%s: bad CCB flags %#x (all flags %#x)\n", 533 __func__, ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS, 534 ccb->ccb_h.flags); 535 xpt_done(ccb); 536 return; 537 } 538 539 /* 540 * If we aren't online, there are no devices to see. 541 */ 542 if (softc->online == 0) { 543 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 544 xpt_done(ccb); 545 return; 546 } 547 548 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 549 if (io == NULL) { 550 printf("%s: can't allocate ctl_io\n", __func__); 551 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 552 xpt_freeze_devq(ccb->ccb_h.path, 1); 553 xpt_done(ccb); 554 return; 555 } 556 ctl_zero_io(io); 557 /* Save pointers on both sides */ 558 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 559 ccb->ccb_h.io_ptr = io; 560 561 /* 562 * Only SCSI I/O comes down this path, resets, etc. come 563 * down via the XPT_RESET_BUS/LUN CCBs below. 564 */ 565 io->io_hdr.io_type = CTL_IO_SCSI; 566 io->io_hdr.nexus.initid.id = 1; 567 io->io_hdr.nexus.targ_port = softc->port.targ_port; 568 /* 569 * XXX KDM how do we handle target IDs? 570 */ 571 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 572 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 573 /* 574 * This tag scheme isn't the best, since we could in theory 575 * have a very long-lived I/O and tag collision, especially 576 * in a high I/O environment. But it should work well 577 * enough for now. Since we're using unsigned ints, 578 * they'll just wrap around. 579 */ 580 io->scsiio.tag_num = softc->cur_tag_num++; 581 csio->tag_id = io->scsiio.tag_num; 582 switch (csio->tag_action) { 583 case CAM_TAG_ACTION_NONE: 584 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 585 break; 586 case MSG_SIMPLE_TASK: 587 io->scsiio.tag_type = CTL_TAG_SIMPLE; 588 break; 589 case MSG_HEAD_OF_QUEUE_TASK: 590 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 591 break; 592 case MSG_ORDERED_TASK: 593 io->scsiio.tag_type = CTL_TAG_ORDERED; 594 break; 595 case MSG_ACA_TASK: 596 io->scsiio.tag_type = CTL_TAG_ACA; 597 break; 598 default: 599 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 600 printf("%s: unhandled tag type %#x!!\n", __func__, 601 csio->tag_action); 602 break; 603 } 604 if (csio->cdb_len > sizeof(io->scsiio.cdb)) { 605 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 606 __func__, csio->cdb_len, sizeof(io->scsiio.cdb)); 607 } 608 io->scsiio.cdb_len = min(csio->cdb_len, sizeof(io->scsiio.cdb)); 609 bcopy(csio->cdb_io.cdb_bytes, io->scsiio.cdb, 610 io->scsiio.cdb_len); 611 612 ccb->ccb_h.status |= CAM_SIM_QUEUED; 613 err = ctl_queue(io); 614 if (err != CTL_RETVAL_COMPLETE) { 615 printf("%s: func %d: error %d returned by " 616 "ctl_queue()!\n", __func__, 617 ccb->ccb_h.func_code, err); 618 ctl_free_io(io); 619 ccb->ccb_h.status = CAM_REQ_INVALID; 620 xpt_done(ccb); 621 return; 622 } 623 break; 624 } 625 case XPT_ABORT: { 626 union ctl_io *io; 627 union ccb *abort_ccb; 628 629 abort_ccb = ccb->cab.abort_ccb; 630 631 if (abort_ccb->ccb_h.func_code != XPT_SCSI_IO) { 632 ccb->ccb_h.status = CAM_REQ_INVALID; 633 xpt_done(ccb); 634 } 635 636 /* 637 * If we aren't online, there are no devices to talk to. 638 */ 639 if (softc->online == 0) { 640 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 641 xpt_done(ccb); 642 return; 643 } 644 645 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 646 if (io == NULL) { 647 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 648 xpt_freeze_devq(ccb->ccb_h.path, 1); 649 xpt_done(ccb); 650 return; 651 } 652 653 ctl_zero_io(io); 654 /* Save pointers on both sides */ 655 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 656 ccb->ccb_h.io_ptr = io; 657 658 io->io_hdr.io_type = CTL_IO_TASK; 659 io->io_hdr.nexus.initid.id = 1; 660 io->io_hdr.nexus.targ_port = softc->port.targ_port; 661 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 662 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 663 io->taskio.task_action = CTL_TASK_ABORT_TASK; 664 io->taskio.tag_num = abort_ccb->csio.tag_id; 665 switch (abort_ccb->csio.tag_action) { 666 case CAM_TAG_ACTION_NONE: 667 io->taskio.tag_type = CTL_TAG_UNTAGGED; 668 break; 669 case MSG_SIMPLE_TASK: 670 io->taskio.tag_type = CTL_TAG_SIMPLE; 671 break; 672 case MSG_HEAD_OF_QUEUE_TASK: 673 io->taskio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 674 break; 675 case MSG_ORDERED_TASK: 676 io->taskio.tag_type = CTL_TAG_ORDERED; 677 break; 678 case MSG_ACA_TASK: 679 io->taskio.tag_type = CTL_TAG_ACA; 680 break; 681 default: 682 io->taskio.tag_type = CTL_TAG_UNTAGGED; 683 printf("%s: unhandled tag type %#x!!\n", __func__, 684 abort_ccb->csio.tag_action); 685 break; 686 } 687 err = ctl_queue(io); 688 if (err != CTL_RETVAL_COMPLETE) { 689 printf("%s func %d: error %d returned by " 690 "ctl_queue()!\n", __func__, 691 ccb->ccb_h.func_code, err); 692 ctl_free_io(io); 693 } 694 break; 695 } 696 case XPT_GET_TRAN_SETTINGS: { 697 struct ccb_trans_settings *cts; 698 struct ccb_trans_settings_scsi *scsi; 699 struct ccb_trans_settings_fc *fc; 700 701 cts = &ccb->cts; 702 scsi = &cts->proto_specific.scsi; 703 fc = &cts->xport_specific.fc; 704 705 706 cts->protocol = PROTO_SCSI; 707 cts->protocol_version = SCSI_REV_SPC2; 708 cts->transport = XPORT_FC; 709 cts->transport_version = 0; 710 711 scsi->valid = CTS_SCSI_VALID_TQ; 712 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 713 fc->valid = CTS_FC_VALID_SPEED; 714 fc->bitrate = 800000; 715 fc->wwnn = softc->wwnn; 716 fc->wwpn = softc->wwpn; 717 fc->port = softc->port.targ_port; 718 fc->valid |= CTS_FC_VALID_WWNN | CTS_FC_VALID_WWPN | 719 CTS_FC_VALID_PORT; 720 ccb->ccb_h.status = CAM_REQ_CMP; 721 break; 722 } 723 case XPT_SET_TRAN_SETTINGS: 724 /* XXX KDM should we actually do something here? */ 725 ccb->ccb_h.status = CAM_REQ_CMP; 726 break; 727 case XPT_RESET_BUS: 728 case XPT_RESET_DEV: { 729 union ctl_io *io; 730 731 /* 732 * If we aren't online, there are no devices to talk to. 733 */ 734 if (softc->online == 0) { 735 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 736 xpt_done(ccb); 737 return; 738 } 739 740 io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); 741 if (io == NULL) { 742 ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN; 743 xpt_freeze_devq(ccb->ccb_h.path, 1); 744 xpt_done(ccb); 745 return; 746 } 747 748 ctl_zero_io(io); 749 /* Save pointers on both sides */ 750 if (ccb->ccb_h.func_code == XPT_RESET_DEV) 751 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb; 752 ccb->ccb_h.io_ptr = io; 753 754 io->io_hdr.io_type = CTL_IO_TASK; 755 io->io_hdr.nexus.initid.id = 0; 756 io->io_hdr.nexus.targ_port = softc->port.targ_port; 757 io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id; 758 io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun; 759 if (ccb->ccb_h.func_code == XPT_RESET_BUS) 760 io->taskio.task_action = CTL_TASK_BUS_RESET; 761 else 762 io->taskio.task_action = CTL_TASK_LUN_RESET; 763 764 err = ctl_queue(io); 765 if (err != CTL_RETVAL_COMPLETE) { 766 printf("%s func %d: error %d returned by " 767 "ctl_queue()!\n", __func__, 768 ccb->ccb_h.func_code, err); 769 ctl_free_io(io); 770 } 771 break; 772 } 773 case XPT_CALC_GEOMETRY: 774 cam_calc_geometry(&ccb->ccg, 1); 775 xpt_done(ccb); 776 break; 777 case XPT_PATH_INQ: { 778 struct ccb_pathinq *cpi; 779 780 cpi = &ccb->cpi; 781 782 cpi->version_num = 0; 783 cpi->hba_inquiry = PI_TAG_ABLE; 784 cpi->target_sprt = 0; 785 cpi->hba_misc = 0; 786 cpi->hba_eng_cnt = 0; 787 cpi->max_target = 1; 788 cpi->max_lun = 1024; 789 /* Do we really have a limit? */ 790 cpi->maxio = 1024 * 1024; 791 cpi->async_flags = 0; 792 cpi->hpath_id = 0; 793 cpi->initiator_id = 0; 794 795 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 796 strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN); 797 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 798 cpi->unit_number = 0; 799 cpi->bus_id = 0; 800 cpi->base_transfer_speed = 800000; 801 cpi->protocol = PROTO_SCSI; 802 cpi->protocol_version = SCSI_REV_SPC2; 803 /* 804 * Pretend to be Fibre Channel. 805 */ 806 cpi->transport = XPORT_FC; 807 cpi->transport_version = 0; 808 cpi->xport_specific.fc.wwnn = softc->wwnn; 809 cpi->xport_specific.fc.wwpn = softc->wwpn; 810 cpi->xport_specific.fc.port = softc->port.targ_port; 811 cpi->xport_specific.fc.bitrate = 8 * 1000 * 1000; 812 cpi->ccb_h.status = CAM_REQ_CMP; 813 break; 814 } 815 default: 816 ccb->ccb_h.status = CAM_PROVIDE_FAIL; 817 printf("%s: unsupported CCB type %#x\n", __func__, 818 ccb->ccb_h.func_code); 819 xpt_done(ccb); 820 break; 821 } 822} 823 824static void 825cfcs_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg) 826{ 827 828} 829